MOA 2022-BLG-309

Event Parameters

Internal ID:gb4-R-3-85976
Discovery date:2022-06-18T10:34:10
RA:17:52:05.05
Dec:-31:01:08.87
Current assessment:microlensing
A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starIDRADecmagseparation
27348 17:52:04.80 -31:01:06.61 17.42 ± 0.09 4.31
27441 17:52:05.01 -31:01:10.08 16.60 ± 0.08 2.17
27485 17:52:05.09 -31:01:07.83 16.90 ± 0.07 0.47
27572 17:52:05.37 -31:01:10.03 16.69 ± 0.07 4.06
27573 17:52:05.33 -31:01:05.65 16.41 ± 0.13 4.21

Last 5 photometry measurements

Observation dateI magseeing
2460246.887 (2023-Oct-29.387) 16.83 ± 0.07 3.38
2460246.898 (2023-Oct-29.398) 16.88 ± 0.06 3.05
2460246.909 (2023-Oct-29.409) 16.84 ± 0.09 3.36
2460246.920 (2023-Oct-29.420) 16.89 ± 0.11 3.60
2460246.929 (2023-Oct-29.429) 16.96 ± 0.14 3.59

Calibration: I = 27.40 - 2.5 log10(ΔF + 15819.76)

Single lens fit parameters

tmax =JD 2459764.44 ± 0.17 UT (2022-Jul-3.94)
tE =39.14 ± 2.71 days
u0 =0.6830 ± 0.0663
Ibase =17.84 ± 0.25

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice